html {
    height: 100%;
}

/* 导航栏 */
.w {
    width: 1240px;
    margin: 0 auto;
}
.nav {
    position: sticky;
    top: 0;
    z-index: 999;
    display: flex;
    /* height: 60px; */
    width: 100%;
    background-color: #01065354;
    backdrop-filter: saturate(150%) blur(28px);
}
.nav .w {
    display: flex;
    justify-content: space-between;
}
.nav .w h1 {
    color: #fff;
    font-size: 32px;
    line-height: 60px;
}
.nav ul {
    display: flex;
    align-items: center;
    /* justify-content: flex-end; */
    gap: 50px;
}
.nav .n-r ul li a {
    /* align-items: center; */
    display: block;
    margin-bottom: 2px;
    color: #fff;
    border-bottom: 2px solid transparent;
    font-size: 20px;
    line-height: 60px;
    transition: all 0.3s;
}
.nav .n-r ul li .index {
    color: aqua;
    border-bottom: 2px solid aqua;
}
.nav .n-r li a:hover {
    color: aqua;
    border-bottom: 2px solid aqua;
}
/* 主体 */
/* 卡片 */
.side-card {
    position: fixed;
    top: 100px;
    left: 200px;
    z-index: 9;
    display: flex;
    flex-direction: column;
    /* justify-content: center; */
    align-items: center;
    height: 80%;
    width: 200px;
    border-radius: 15px;
    backdrop-filter: saturate(150%) blur(28px);
    background: rgba(59, 56, 105, 0.2);
}
.side-card .card-1 {
    text-align: center;
    margin: 10px 0;
}
.side-card img {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    border: 2px solid #165DFF
}
.side-card .name {
    margin-top: 10px;
    font-size: 20px;
    color: #fff;
}
.side-card p {
    color: #fff;
    line-height: 20px;
}
.side-card p a {
    color: #ffe600;
}
.line {
    height: 1px;
    width: 180px;
    background-color: #c5c0c0;
}
.card-2 {
    width: 80%;
    margin: 10px 0;
    text-align: justify;
    font-size: 14px;
    color: #a1a1a1;
}
.card-3 {
    position: relative;
    height: 100px;
    width: 80%;
    margin-top: 10px;
    transform-style: preserve-3d;
    perspective: 1000px;
}
.font,.back {
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: rgb(0, 93, 185);
    border: #7aefff;
    box-shadow: 0 0 2px #8bd6ec;
    color: #fff;
    text-align: center;
    line-height: 100px;
    transform-style: preserve-3d;
    backface-visibility: hidden;
    transition: all 2s;
}
.back {
    transform: rotateY(180deg);
    color: rgb(0, 255, 221);
    font-size: 30px;
    font-family: 宋体;
}
.card-3:hover .font {
    transform: rotateY(-180deg);
}
.card-3:hover .back {
    transform: rotateY(0deg);
}
.card-3:hover .text-0 {
    transform: translate3d(0,0,20px);
}
.card-3:hover .text-1 {
    transform: translate3d(0,0,20px);
}
/* main */
.main {
    position: relative;
    display: flex;
    justify-content: center;
    width: 100%;
    height: 100%;
}
.m-img {
    position: relative;
    height: 500px;
    z-index: 0;
    width: 95%;
    border-radius: 20px;
    overflow: hidden;
    background: url(../back.png) no-repeat scroll center top 10% / cover;
}
.m-img .hello {
    position: absolute;
    top: 100px;
    left: 500px;
    color: rgb(255, 255, 255);
    /* font-family: 宋体; */
    font-size: 37px;
    font-weight: 300;
    -webkit-box-reflect: below 10px linear-gradient(transparent, rgba(180, 255, 251, 0.2));
}
/* 右侧 */
.box {
    position: absolute;
    top: 220px;
    right: 8%;
    left: auto;
    width: 55%;
    max-width: 800px; 
    background-color: transparent;
}
.box-1,.box-2 {
    width: 100%;
    margin: 0 auto;
}
.box-1 .title,.box-2 .title {
    text-align: center;
    color: #8bffdc;
    font-size: 35px;
}
/* 计划 */
@keyframes enter {
	to {
		opacity: 1;
		transform: translateY(0);
	}
}
.plan {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 25px;
    margin: 18px auto;
    padding: 0 20px;
    height: 200px;
    opacity: 0;
    animation: enter 1s ease forwards;
}
.box .box-1 .plan>div {
    height: 100px; 
    padding: 20px;
    border-radius: 20px;
    color: #f0f0f0;
    font-weight: 800;
}
.box .box-1 .plan>div h2 {
    margin-bottom: 20px;
}
.plan-1, .plan-2, .plan-3, .plan-4 {
    background: linear-gradient(180deg, rgba(28, 45, 75, 0.9), rgba(15, 23, 42, 0.95));
    transition: all 0.35s ease;
}

.plan-1:hover, .plan-2:hover, .plan-3:hover, .plan-4:hover {
    transform: translateY(-6px); 
    background-color: #122642;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.733); 
}
/* 文字 */
.box-2 {
    margin: 40px auto 0;
    padding: 30px;
    width: calc(100% - 40px);
    backdrop-filter: saturate(150%) blur(28px);
    background: rgba(59, 56, 105, 0.2);
    border-radius: 10px;
    opacity: 0;
    animation: enter 1s ease forwards;
    animation-delay: 0.2s;
}
.box-2 .content p{
    margin: 15px 0;
    color: #f0f0f0;
    font-size: 18px;
    line-height: 1.5;
    text-align: justify;
    text-indent: 2em;
}